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Comparative Study
. 1993 Oct;67(10):5939-47.
doi: 10.1128/JVI.67.10.5939-5947.1993.

Cofactor requirement for human immunodeficiency virus type 1 entry into a CD4-expressing human cell line

R D Harrington  1 , A P Geballe
Affiliations
Comparative Study

Cofactor requirement for human immunodeficiency virus type 1 entry into a CD4-expressing human cell line

R D Harrington et al. J Virol. 1993 Oct.

Abstract

Expression of the human immunodeficiency virus type 1 (HIV-1) receptor CD4 on many nonhuman and some human cell lines is not sufficient to permit HIV-1 infection. We describe a human glioblastoma cell line (U373-MG) which remains resistant to HIV-1 despite the added expression of an authentic CD4 molecule. The block to HIV-1 infection of these cells is strain independent and appears to be at viral entry. Heterokaryons of CD4-expressing U373-MG (U373-CD4) cells fused to HeLa cells allow HIV-1 entry. A U373-CD4/HeLa hybrid clone allows efficient HIV-1 replication. These results suggest that HeLa cells express a factor(s) that can complement the viral entry defect of U373-CD4 cells and is necessary for efficient CD4-mediated HIV-1 infection.

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References

    1. Virology. 1973 Apr;52(2):456-67 - PubMed
    1. J Virol. 1993 Apr;67(4):2355-9 - PubMed
    1. Cell. 1987 Jul 31;50(3):327-8 - PubMed
    1. Cell. 1987 Sep 11;50(6):975-85 - PubMed
    1. Science. 1987 Sep 11;237(4820):1351-5 - PubMed

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